High-frequency magnetic ceramic and high-frequency circuit component
AssigneeMurata Manufacturing Co., Ltd.
InventorHiroaki Kikuta
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Abstract
A high-frequency magnetic ceramic comprises garnet ferrite represented by the formula AZB8-ZO12 wherein the site A comprises yttrium and the site B comprises iron, where Z is in the range of more than 3.00 to 3.09. The relative density of the high-frequency magnetic ceramic is at least 95%, the average grain diameter is at least 3 ?m, and the 3? value of the grain diameters is 2 ?m or less wherein ? represents the standard deviation of the grain diameters. A high-frequency circuit deviation of the grain diameters. A high-frequency circuit component includes microwave magnetic composites composed of the high-frequency magnetic ceramic and central electrodes that are mutually insulated.
Claims5
A high-frequency magnetic ceramic comprising garnet ferrite represented by the formula AZB8—ZO12 wherein the site A comprises yttrium and the site B comprises iron,
- wherein Z is in the range of more than 3.00 to 3.09, the relative density of the high-frequency magnetic ceramic is at least 95%, the average grain diameter is at least 3 μm, and the 3σ value of the grain diameters is 2 μm or less wherein the relative density represents the ratio of the density of the sintered ceramic to the theoretical density and σ represents the standard deviation of the grain diameters.
Dependencies are inferred from the claim text.